Car-dumping mechanism.



G. H. HULETT. GAR. DUMPING MEGHANISM.

APPLICATION FILED JUNE 2, 191s.

WIj/NESSES @MMA j www? roller 4 at the upper end ot the guide 5-8. Continued rotation of the drum Q6 will cause the cradle to be fully tilted on said pivotal support and the contents of the car to be inverted and thus caused to discharge its contents onto the apron 18. During such tilting of the cradle, the clamping bars 3l will be caused to become disposed across the open top ot the car as will be readily understood. When the contents et the car have been discharged, release of the drum 26 will permit the cradle to be drawn back by the operation of the weights 38 connected with the clamp beams and the cradle may then be lowered under the control ot the suitable brake device applied to the drum 26. During such lowering of the cradle, the weights 30 and 38 will be raised. It will be observed that by elevating the beam 12, the guides 5 and 7 andthe apron 18 will also be raised, and the mechanism may thus be adapted to raise the cradle different heights according to the height of the boat into which the contents of cars'is to be dumped.

Vith car dumping mechanism of the type to which m invention relates, as heretov fore built, 1t was necessary to have two parts of rope on the side of the cradle carrying the pivot in order to prevent the cradle from swinging out instead of hoisting, when the drum was rotated and after the cradle was lifted until it came in contact with the pivot carried by the girder, more power was necessary lto rotate the car than was required to lift it, and it was necessary to take in three parts of cable when lifting and only one part of cable when revolving, the result was that a very serious increase in power was required to litt it, and.

at the same time, the speed of the machinery was only ene-third that required to lift it. This made it necessary to stop hoisting the cradle when it came in contact with the pivot and then start the machinery again under greater loads at about one-third speed. These objections are obviated in my improved construction, by the provision of counter-weight 30 and the employment of cable in two parts for hoisting instead of one, the counterweight taking onesthird of the weight to be lifted and the change of speed being only from one to two instead of one to three. To further decrease the power required to hoist and turnthe car, and to save the loss-of time by reason of stopping the car when the cradle comes in contact with the pivot"bearing and avoiding the shock and the very large increase of power necessary to turn the cradle, I have designed.

the guides 5-7 which, as before explained, are attached to the girder and operate to partially invert the car before it reaches the pivot, and as the center ot' the gravity o't the car, its contents and the cradle, has

now passed very much nearer to the pivot around which it is to be revolved, the power requiredto' turn the load is reduced to a minimum, permitting a higher speed of turning with the same sized motors or engines, than has heretofore been accomplished.

The combined weight of the counterweights 30 and 3S, is less than the weight ot the empty 4cradle and the cradle will therefore remain in its normal position without being latched and the combined weight ot an empty car and the cradle is sufficient to hoist the counterweights andv permit the cradle to descend under control ot the drum 26. I

y Various changes might be made in the details of construction of my invention, without departing from the spirit thereof or limiting its scope and hence I do not wish to restrict myself to specific structural details. y

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

l. In car dumping mechanism, the combination of a. cradle, vertically adjustable guides therefor, a counterweighted cable connected with the cradle, and a counterweighted cable connected with a normally fixed support and having movable connection witlrthe cradle under the same.

2. In car dumping mechanism, the combination with a vertically adjustable beam and a cradle. ot guides for the cradle attached to and movable vertically with said beam, and means for raising, lowering and tilting said cradle.

In car dumping mechanism, the combination with a horizontal beam and a cradle, ot guidesl for the cradle connected with and depending Vfrom said beam, means for raising and lowering said horizontal beam and the guides connected therewith, and means Vfor raising, lowering and tilting said cradle. f

Lt. In car dumping mechanism, the combination with a cradle, a horizontal be and means for adjusting the beam verticany, ot guiding means for the cradle connected with said beam, a cable secured at one end to said beam and :formed into a loop having movable connection with the cradle, and means for operating said cable.

5. In car dumping mechanism, the 'combination with a cradle, a horizontal beam, and means for adjusting the beam vertically, of guiding means for the cradle connected at one end with said beam and formed into a loop having movable connection with the cradle, means for operating said cable, and a count-erweighted cable connected with the cradle in proximity to said guiding means.

6. In ear dumping'mechanism, the combination with a. beam, and a cradle, 'of a lIO guide for the cradle, said guide havin an In testimony whereof, I have signed this outwardly curved upper end attache to specification in the presence of two subscribsaid beam, said upper end of the guide having Witnesses.

ing a stop constitutin e pivotal support GEORGE H. HULETT. for the cradle, ineens or raising, lowering Witnesses:

and tilting the cradle, and means for adjust- H. A. PILOUBET,

ing said beam vertically. HERBERT P. GLIDDEN. 

